A199582 - OEIS

%I #8 Jul 13 2013 12:04:19

%S 1,1,2,3,7,13,29,53,107,211,431,809,1619,3037,6079,11467,22937,43541,

%T 87083,166183,332393,636761,1273541,2448049,4896103,9438851,18877711,

%U 36484271,72968563,141332173,282664351,548544487,1097088989,2132671027,4265342057

%N Central terms of the triangle in A199333: a(n) = A199333(n,[n/2])

%C a(n) = max(A199333(n,k): 0<=k<=n/2) = A006530(A199695(n)) = A006530(A199696(n));

%C a(2*n) = A007918(a(2*n-1)) for n > 0.

%H Reinhard Zumkeller, <a href="/A199582/b199582.txt">Table of n, a(n) for n = 0..150</a>

%o (Haskell)

%o a199582 n = a199333_row n !! (n `div` 2)

%Y Cf. A199581, A001405.

%K nonn

%O 0,3

%A _Reinhard Zumkeller_, Nov 09 2011